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Comparing Coro/Coro/State.xs (file contents):
Revision 1.174 by root, Sun Sep 30 13:43:18 2007 UTC vs.
Revision 1.284 by root, Mon Nov 17 01:05:47 2008 UTC

1#include "libcoro/coro.c" 1#include "libcoro/coro.c"
2 2
3#define PERL_NO_GET_CONTEXT 3#define PERL_NO_GET_CONTEXT
4#define PERL_EXT
4 5
5#include "EXTERN.h" 6#include "EXTERN.h"
6#include "perl.h" 7#include "perl.h"
7#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
8 10
9#include "patchlevel.h" 11#include "patchlevel.h"
10 12
11#include <stdio.h> 13#include <stdio.h>
12#include <errno.h> 14#include <errno.h>
13#include <assert.h> 15#include <assert.h>
16
17#ifdef WIN32
18# undef setjmp
19# undef longjmp
20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask
22#else
23# include <inttypes.h> /* most portable stdint.h */
24#endif
14 25
15#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
16# include <unistd.h> 27# include <unistd.h>
17# include <sys/mman.h> 28# include <sys/mman.h>
18# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
35# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
36#endif 47#endif
37 48
38#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
39# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
40# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
41#else
42# define REGISTER_STACK(cctx,start,end)
43#endif 51#endif
44 52
45/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
46#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
47 55
48#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
49 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
50 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
51 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
… …
70# ifndef IS_PADCONST 78# ifndef IS_PADCONST
71# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
72# endif 80# endif
73#endif 81#endif
74 82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100
75/* 5.8.7 */ 101/* 5.8.7 */
76#ifndef SvRV_set 102#ifndef SvRV_set
77# define SvRV_set(s,v) SvRV(s) = (v) 103# define SvRV_set(s,v) SvRV(s) = (v)
78#endif 104#endif
79 105
… …
90# define CORO_PREFER_PERL_FUNCTIONS 0 116# define CORO_PREFER_PERL_FUNCTIONS 0
91#endif 117#endif
92 118
93/* The next macros try to return the current stack pointer, in an as 119/* The next macros try to return the current stack pointer, in an as
94 * portable way as possible. */ 120 * portable way as possible. */
95#define dSTACKLEVEL volatile char stacklevel 121#if __GNUC__ >= 4
96#define STACKLEVEL ((void *)&stacklevel) 122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0)
123#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel
125#endif
97 126
98#define IN_DESTRUCT (PL_main_cv == Nullcv) 127#define IN_DESTRUCT (PL_main_cv == Nullcv)
99 128
100#if __GNUC__ >= 3 129#if __GNUC__ >= 3
101# define attribute(x) __attribute__(x) 130# define attribute(x) __attribute__(x)
102# define BARRIER __asm__ __volatile__ ("" : : : "memory") 131# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline
103#else 133#else
104# define attribute(x) 134# define attribute(x)
105# define BARRIER 135# define expect(expr,value) (expr)
136# define INLINE static
106#endif 137#endif
138
139#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1)
107 141
108#define NOINLINE attribute ((noinline)) 142#define NOINLINE attribute ((noinline))
109 143
110#include "CoroAPI.h" 144#include "CoroAPI.h"
111 145
112#ifdef USE_ITHREADS 146#ifdef USE_ITHREADS
113static perl_mutex coro_mutex; 147# if CORO_PTHREAD
114# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 148static void *coro_thx;
115# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 149# endif
116#else
117# define LOCK (void)0
118# define UNLOCK (void)0
119#endif 150#endif
120 151
121/* helper storage struct for Coro::AIO */ 152/* helper storage struct for Coro::AIO */
122struct io_state 153struct io_state
123{ 154{
155 AV *res;
124 int errorno; 156 int errorno;
125 I32 laststype; 157 I32 laststype; /* U16 in 5.10.0 */
126 int laststatval; 158 int laststatval;
127 Stat_t statcache; 159 Stat_t statcache;
128}; 160};
129 161
162static double (*nvtime)(); /* so why doesn't it take void? */
163
164static U32 cctx_gen;
130static size_t coro_stacksize = CORO_STACKSIZE; 165static size_t cctx_stacksize = CORO_STACKSIZE;
131static struct CoroAPI coroapi; 166static struct CoroAPI coroapi;
132static AV *main_mainstack; /* used to differentiate between $main and others */ 167static AV *main_mainstack; /* used to differentiate between $main and others */
133static JMPENV *main_top_env; 168static JMPENV *main_top_env;
134static HV *coro_state_stash, *coro_stash; 169static HV *coro_state_stash, *coro_stash;
135static SV *coro_mortal; /* will be freed after next transfer */ 170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171
172static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook;
175static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */
136 177
137/* async_pool helper stuff */ 178/* async_pool helper stuff */
138static SV *sv_pool_rss; 179static SV *sv_pool_rss;
139static SV *sv_pool_size; 180static SV *sv_pool_size;
140static AV *av_async_pool; 181static AV *av_async_pool;
182
183/* Coro::AnyEvent */
184static SV *sv_activity;
141 185
142static struct coro_cctx *cctx_first; 186static struct coro_cctx *cctx_first;
143static int cctx_count, cctx_idle; 187static int cctx_count, cctx_idle;
144 188
145enum { 189enum {
… …
150 CC_TRACE_LINE = 0x10, /* trace each statement */ 194 CC_TRACE_LINE = 0x10, /* trace each statement */
151 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 195 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
152}; 196};
153 197
154/* this is a structure representing a c-level coroutine */ 198/* this is a structure representing a c-level coroutine */
155typedef struct coro_cctx { 199typedef struct coro_cctx
200{
156 struct coro_cctx *next; 201 struct coro_cctx *next;
157 202
158 /* the stack */ 203 /* the stack */
159 void *sptr; 204 void *sptr;
160 size_t ssize; 205 size_t ssize;
… …
163 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 208 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
164 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 209 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
165 JMPENV *top_env; 210 JMPENV *top_env;
166 coro_context cctx; 211 coro_context cctx;
167 212
213 U32 gen;
168#if CORO_USE_VALGRIND 214#if CORO_USE_VALGRIND
169 int valgrind_id; 215 int valgrind_id;
170#endif 216#endif
171 unsigned char flags; 217 unsigned char flags;
172} coro_cctx; 218} coro_cctx;
… …
176 CF_READY = 0x0002, /* coroutine is ready */ 222 CF_READY = 0x0002, /* coroutine is ready */
177 CF_NEW = 0x0004, /* has never been switched to */ 223 CF_NEW = 0x0004, /* has never been switched to */
178 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
179}; 225};
180 226
181/* this is a structure representing a perl-level coroutine */ 227/* the structure where most of the perl state is stored, overlaid on the cxstack */
182struct coro { 228typedef struct
183 /* the c coroutine allocated to this perl coroutine, if any */ 229{
184 coro_cctx *cctx; 230 SV *defsv;
185 231 AV *defav;
186 /* data associated with this coroutine (initial args) */ 232 SV *errsv;
187 AV *args; 233 SV *irsgv;
188 int refcnt;
189 int save; /* CORO_SAVE flags */
190 int flags; /* CF_ flags */
191
192 /* optionally saved, might be zero */
193 AV *defav; /* @_ */
194 SV *defsv; /* $_ */
195 SV *errsv; /* $@ */
196 GV *deffh; /* default filehandle */
197 SV *irssv; /* $/ */
198 SV *irssv_sv; /* real $/ cache */
199
200#define VAR(name,type) type name; 234#define VAR(name,type) type name;
201# include "state.h" 235# include "state.h"
202#undef VAR 236#undef VAR
237} perl_slots;
238
239#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
240
241/* this is a structure representing a perl-level coroutine */
242struct coro {
243 /* the C coroutine allocated to this perl coroutine, if any */
244 coro_cctx *cctx;
245
246 /* process data */
247 struct CoroSLF slf_frame; /* saved slf frame */
248 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */
250
251 AV *args; /* data associated with this coroutine (initial args) */
252 int refcnt; /* coroutines are refcounted, yes */
253 int flags; /* CF_ flags */
254 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro);
203 256
204 /* statistics */ 257 /* statistics */
205 int usecount; /* number of switches to this coro */ 258 int usecount; /* number of transfers to this coro */
206 259
207 /* coro process data */ 260 /* coro process data */
208 int prio; 261 int prio;
262 SV *throw; /* exception to be thrown */
263
264 /* async_pool */
265 SV *saved_deffh;
209 266
210 /* linked list */ 267 /* linked list */
211 struct coro *next, *prev; 268 struct coro *next, *prev;
212 HV *hv; /* the perl hash associated with this coro, if any */
213}; 269};
214 270
215typedef struct coro *Coro__State; 271typedef struct coro *Coro__State;
216typedef struct coro *Coro__State_or_hashref; 272typedef struct coro *Coro__State_or_hashref;
273
274static struct CoroSLF slf_frame; /* the current slf frame */
217 275
218/** Coro ********************************************************************/ 276/** Coro ********************************************************************/
219 277
220#define PRIO_MAX 3 278#define PRIO_MAX 3
221#define PRIO_HIGH 1 279#define PRIO_HIGH 1
… …
224#define PRIO_IDLE -3 282#define PRIO_IDLE -3
225#define PRIO_MIN -4 283#define PRIO_MIN -4
226 284
227/* for Coro.pm */ 285/* for Coro.pm */
228static SV *coro_current; 286static SV *coro_current;
287static SV *coro_readyhook;
229static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 288static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
230static int coro_nready;
231static struct coro *coro_first; 289static struct coro *coro_first;
290#define coro_nready coroapi.nready
232 291
233/** lowlevel stuff **********************************************************/ 292/** lowlevel stuff **********************************************************/
293
294static SV *
295coro_get_sv (pTHX_ const char *name, int create)
296{
297#if PERL_VERSION_ATLEAST (5,10,0)
298 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
299 get_sv (name, create);
300#endif
301 return get_sv (name, create);
302}
303
304static AV *
305coro_get_av (pTHX_ const char *name, int create)
306{
307#if PERL_VERSION_ATLEAST (5,10,0)
308 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
309 get_av (name, create);
310#endif
311 return get_av (name, create);
312}
313
314static HV *
315coro_get_hv (pTHX_ const char *name, int create)
316{
317#if PERL_VERSION_ATLEAST (5,10,0)
318 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
319 get_hv (name, create);
320#endif
321 return get_hv (name, create);
322}
234 323
235static AV * 324static AV *
236coro_clone_padlist (pTHX_ CV *cv) 325coro_clone_padlist (pTHX_ CV *cv)
237{ 326{
238 AV *padlist = CvPADLIST (cv); 327 AV *padlist = CvPADLIST (cv);
239 AV *newpadlist, *newpad; 328 AV *newpadlist, *newpad;
240 329
241 newpadlist = newAV (); 330 newpadlist = newAV ();
242 AvREAL_off (newpadlist); 331 AvREAL_off (newpadlist);
243#if PERL_VERSION_ATLEAST (5,9,0) 332#if PERL_VERSION_ATLEAST (5,10,0)
244 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 333 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
245#else 334#else
246 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 335 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
247#endif 336#endif
248 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 337 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
249 --AvFILLp (padlist); 338 --AvFILLp (padlist);
250 339
251 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 340 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
252 av_store (newpadlist, 1, (SV *)newpad); 341 av_store (newpadlist, 1, (SV *)newpad);
253 342
254 return newpadlist; 343 return newpadlist;
255} 344}
256 345
… …
286 375
287 /* casting is fun. */ 376 /* casting is fun. */
288 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 377 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
289 free_padlist (aTHX_ padlist); 378 free_padlist (aTHX_ padlist);
290 379
291 SvREFCNT_dec (av); 380 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
292 381
293 return 0; 382 return 0;
294} 383}
295 384
296#define PERL_MAGIC_coro PERL_MAGIC_ext 385#define CORO_MAGIC_type_cv PERL_MAGIC_ext
386#define CORO_MAGIC_type_state PERL_MAGIC_ext
297 387
298static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 388static MGVTBL coro_cv_vtbl = {
389 0, 0, 0, 0,
390 coro_cv_free
391};
299 392
300#define CORO_MAGIC(cv) \ 393#define CORO_MAGIC(sv, type) \
301 SvMAGIC (cv) \ 394 expect_true (SvMAGIC (sv)) \
302 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 395 ? expect_true (SvMAGIC (sv)->mg_type == type) \
303 ? SvMAGIC (cv) \ 396 ? SvMAGIC (sv) \
304 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 397 : mg_find (sv, type) \
305 : 0 398 : 0
306 399
307static struct coro * 400#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
401#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
402
403INLINE struct coro *
308SvSTATE_ (pTHX_ SV *coro) 404SvSTATE_ (pTHX_ SV *coro)
309{ 405{
310 HV *stash; 406 HV *stash;
311 MAGIC *mg; 407 MAGIC *mg;
312 408
313 if (SvROK (coro)) 409 if (SvROK (coro))
314 coro = SvRV (coro); 410 coro = SvRV (coro);
315 411
316 if (SvTYPE (coro) != SVt_PVHV) 412 if (expect_false (SvTYPE (coro) != SVt_PVHV))
317 croak ("Coro::State object required"); 413 croak ("Coro::State object required");
318 414
319 stash = SvSTASH (coro); 415 stash = SvSTASH (coro);
320 if (stash != coro_stash && stash != coro_state_stash) 416 if (expect_false (stash != coro_stash && stash != coro_state_stash))
321 { 417 {
322 /* very slow, but rare, check */ 418 /* very slow, but rare, check */
323 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) 419 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
324 croak ("Coro::State object required"); 420 croak ("Coro::State object required");
325 } 421 }
326 422
327 mg = CORO_MAGIC (coro); 423 mg = CORO_MAGIC_state (coro);
328 return (struct coro *)mg->mg_ptr; 424 return (struct coro *)mg->mg_ptr;
329} 425}
330 426
331#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 427#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
332 428
429/* fastert than SvSTATE, but expects a coroutine hv */
430INLINE struct coro *
431SvSTATE_hv (SV *sv)
432{
433 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
434 ? SvMAGIC (sv)
435 : mg_find (sv, CORO_MAGIC_type_state);
436
437 return (struct coro *)mg->mg_ptr;
438}
439
440#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
441
333/* the next two functions merely cache the padlists */ 442/* the next two functions merely cache the padlists */
334static void 443static void
335get_padlist (pTHX_ CV *cv) 444get_padlist (pTHX_ CV *cv)
336{ 445{
337 MAGIC *mg = CORO_MAGIC (cv); 446 MAGIC *mg = CORO_MAGIC_cv (cv);
338 AV *av; 447 AV *av;
339 448
340 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 449 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
341 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 450 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
342 else 451 else
343 { 452 {
344#if CORO_PREFER_PERL_FUNCTIONS 453#if CORO_PREFER_PERL_FUNCTIONS
345 /* this is probably cleaner, but also slower? */ 454 /* this is probably cleaner? but also slower! */
455 /* in practise, it seems to be less stable */
346 CV *cp = Perl_cv_clone (cv); 456 CV *cp = Perl_cv_clone (cv);
347 CvPADLIST (cv) = CvPADLIST (cp); 457 CvPADLIST (cv) = CvPADLIST (cp);
348 CvPADLIST (cp) = 0; 458 CvPADLIST (cp) = 0;
349 SvREFCNT_dec (cp); 459 SvREFCNT_dec (cp);
350#else 460#else
… …
354} 464}
355 465
356static void 466static void
357put_padlist (pTHX_ CV *cv) 467put_padlist (pTHX_ CV *cv)
358{ 468{
359 MAGIC *mg = CORO_MAGIC (cv); 469 MAGIC *mg = CORO_MAGIC_cv (cv);
360 AV *av; 470 AV *av;
361 471
362 if (!mg) 472 if (expect_false (!mg))
363 { 473 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
364 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
365 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
366 mg->mg_virtual = &vtbl_coro;
367 mg->mg_obj = (SV *)newAV ();
368 }
369 474
370 av = (AV *)mg->mg_obj; 475 av = (AV *)mg->mg_obj;
371 476
372 if (AvFILLp (av) >= AvMAX (av)) 477 if (expect_false (AvFILLp (av) >= AvMAX (av)))
373 av_extend (av, AvMAX (av) + 1); 478 av_extend (av, AvMAX (av) + 1);
374 479
375 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 480 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
376} 481}
377 482
378/** load & save, init *******************************************************/ 483/** load & save, init *******************************************************/
379 484
380#define SB do {
381#define SE } while (0)
382
383#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
384
385static void 485static void
386load_perl (pTHX_ Coro__State c) 486load_perl (pTHX_ Coro__State c)
387{ 487{
488 perl_slots *slot = c->slot;
489 c->slot = 0;
490
491 PL_mainstack = c->mainstack;
492
493 GvSV (PL_defgv) = slot->defsv;
494 GvAV (PL_defgv) = slot->defav;
495 GvSV (PL_errgv) = slot->errsv;
496 GvSV (irsgv) = slot->irsgv;
497
388#define VAR(name,type) PL_ ## name = c->name; 498 #define VAR(name,type) PL_ ## name = slot->name;
389# include "state.h" 499 # include "state.h"
390#undef VAR 500 #undef VAR
391
392 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
393 if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
394 if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
395 if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
396
397 if (c->irssv)
398 {
399 if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
400 {
401 SvREFCNT_dec (c->irssv);
402 c->irssv = 0;
403 }
404 else
405 {
406 REPLACE_SV (PL_rs, c->irssv);
407 if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
408 sv_setsv (c->irssv_sv, PL_rs);
409 }
410 }
411 501
412 { 502 {
413 dSP; 503 dSP;
504
414 CV *cv; 505 CV *cv;
415 506
416 /* now do the ugly restore mess */ 507 /* now do the ugly restore mess */
417 while ((cv = (CV *)POPs)) 508 while (expect_true (cv = (CV *)POPs))
418 { 509 {
419 put_padlist (aTHX_ cv); /* mark this padlist as available */ 510 put_padlist (aTHX_ cv); /* mark this padlist as available */
420 CvDEPTH (cv) = PTR2IV (POPs); 511 CvDEPTH (cv) = PTR2IV (POPs);
421 CvPADLIST (cv) = (AV *)POPs; 512 CvPADLIST (cv) = (AV *)POPs;
422 } 513 }
423 514
424 PUTBACK; 515 PUTBACK;
425 } 516 }
517
518 slf_frame = c->slf_frame;
426} 519}
427 520
428static void 521static void
429save_perl (pTHX_ Coro__State c) 522save_perl (pTHX_ Coro__State c)
430{ 523{
524 c->slf_frame = slf_frame;
525
431 { 526 {
432 dSP; 527 dSP;
433 I32 cxix = cxstack_ix; 528 I32 cxix = cxstack_ix;
434 PERL_CONTEXT *ccstk = cxstack; 529 PERL_CONTEXT *ccstk = cxstack;
435 PERL_SI *top_si = PL_curstackinfo; 530 PERL_SI *top_si = PL_curstackinfo;
… …
441 536
442 XPUSHs (Nullsv); 537 XPUSHs (Nullsv);
443 /* this loop was inspired by pp_caller */ 538 /* this loop was inspired by pp_caller */
444 for (;;) 539 for (;;)
445 { 540 {
446 while (cxix >= 0) 541 while (expect_true (cxix >= 0))
447 { 542 {
448 PERL_CONTEXT *cx = &ccstk[cxix--]; 543 PERL_CONTEXT *cx = &ccstk[cxix--];
449 544
450 if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT) 545 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
451 { 546 {
452 CV *cv = cx->blk_sub.cv; 547 CV *cv = cx->blk_sub.cv;
453 548
454 if (CvDEPTH (cv)) 549 if (expect_true (CvDEPTH (cv)))
455 { 550 {
456 EXTEND (SP, 3); 551 EXTEND (SP, 3);
457 PUSHs ((SV *)CvPADLIST (cv)); 552 PUSHs ((SV *)CvPADLIST (cv));
458 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 553 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
459 PUSHs ((SV *)cv); 554 PUSHs ((SV *)cv);
460 555
461 CvDEPTH (cv) = 0; 556 CvDEPTH (cv) = 0;
462 get_padlist (aTHX_ cv); 557 get_padlist (aTHX_ cv);
463 } 558 }
464 } 559 }
465 } 560 }
466 561
467 if (top_si->si_type == PERLSI_MAIN) 562 if (expect_true (top_si->si_type == PERLSI_MAIN))
468 break; 563 break;
469 564
470 top_si = top_si->si_prev; 565 top_si = top_si->si_prev;
471 ccstk = top_si->si_cxstack; 566 ccstk = top_si->si_cxstack;
472 cxix = top_si->si_cxix; 567 cxix = top_si->si_cxix;
473 } 568 }
474 569
475 PUTBACK; 570 PUTBACK;
476 } 571 }
477 572
478 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 573 /* allocate some space on the context stack for our purposes */
479 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 574 /* we manually unroll here, as usually 2 slots is enough */
480 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 575 if (SLOT_COUNT >= 1) CXINC;
481 c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0; 576 if (SLOT_COUNT >= 2) CXINC;
482 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 577 if (SLOT_COUNT >= 3) CXINC;
578 {
579 int i;
580 for (i = 3; i < SLOT_COUNT; ++i)
581 CXINC;
582 }
583 cxstack_ix -= SLOT_COUNT; /* undo allocation */
483 584
585 c->mainstack = PL_mainstack;
586
587 {
588 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
589
590 slot->defav = GvAV (PL_defgv);
591 slot->defsv = DEFSV;
592 slot->errsv = ERRSV;
593 slot->irsgv = GvSV (irsgv);
594
484#define VAR(name,type)c->name = PL_ ## name; 595 #define VAR(name,type) slot->name = PL_ ## name;
485# include "state.h" 596 # include "state.h"
486#undef VAR 597 #undef VAR
598 }
487} 599}
488 600
489/* 601/*
490 * allocate various perl stacks. This is an exact copy 602 * allocate various perl stacks. This is almost an exact copy
491 * of perl.c:init_stacks, except that it uses less memory 603 * of perl.c:init_stacks, except that it uses less memory
492 * on the (sometimes correct) assumption that coroutines do 604 * on the (sometimes correct) assumption that coroutines do
493 * not usually need a lot of stackspace. 605 * not usually need a lot of stackspace.
494 */ 606 */
495#if CORO_PREFER_PERL_FUNCTIONS 607#if CORO_PREFER_PERL_FUNCTIONS
496# define coro_init_stacks init_stacks 608# define coro_init_stacks init_stacks
497#else 609#else
498static void 610static void
499coro_init_stacks (pTHX) 611coro_init_stacks (pTHX)
500{ 612{
501 PL_curstackinfo = new_stackinfo(64, 6); 613 PL_curstackinfo = new_stackinfo(32, 8);
502 PL_curstackinfo->si_type = PERLSI_MAIN; 614 PL_curstackinfo->si_type = PERLSI_MAIN;
503 PL_curstack = PL_curstackinfo->si_stack; 615 PL_curstack = PL_curstackinfo->si_stack;
504 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 616 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
505 617
506 PL_stack_base = AvARRAY(PL_curstack); 618 PL_stack_base = AvARRAY(PL_curstack);
507 PL_stack_sp = PL_stack_base; 619 PL_stack_sp = PL_stack_base;
508 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 620 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
509 621
510 New(50,PL_tmps_stack,64,SV*); 622 New(50,PL_tmps_stack,32,SV*);
511 PL_tmps_floor = -1; 623 PL_tmps_floor = -1;
512 PL_tmps_ix = -1; 624 PL_tmps_ix = -1;
513 PL_tmps_max = 64; 625 PL_tmps_max = 32;
514 626
515 New(54,PL_markstack,16,I32); 627 New(54,PL_markstack,16,I32);
516 PL_markstack_ptr = PL_markstack; 628 PL_markstack_ptr = PL_markstack;
517 PL_markstack_max = PL_markstack + 16; 629 PL_markstack_max = PL_markstack + 16;
518 630
519#ifdef SET_MARK_OFFSET 631#ifdef SET_MARK_OFFSET
520 SET_MARK_OFFSET; 632 SET_MARK_OFFSET;
521#endif 633#endif
522 634
523 New(54,PL_scopestack,16,I32); 635 New(54,PL_scopestack,8,I32);
524 PL_scopestack_ix = 0; 636 PL_scopestack_ix = 0;
525 PL_scopestack_max = 16; 637 PL_scopestack_max = 8;
526 638
527 New(54,PL_savestack,64,ANY); 639 New(54,PL_savestack,24,ANY);
528 PL_savestack_ix = 0; 640 PL_savestack_ix = 0;
529 PL_savestack_max = 64; 641 PL_savestack_max = 24;
530 642
531#if !PERL_VERSION_ATLEAST (5,9,0) 643#if !PERL_VERSION_ATLEAST (5,10,0)
532 New(54,PL_retstack,4,OP*); 644 New(54,PL_retstack,4,OP*);
533 PL_retstack_ix = 0; 645 PL_retstack_ix = 0;
534 PL_retstack_max = 4; 646 PL_retstack_max = 4;
535#endif 647#endif
536} 648}
… …
538 650
539/* 651/*
540 * destroy the stacks, the callchain etc... 652 * destroy the stacks, the callchain etc...
541 */ 653 */
542static void 654static void
543coro_destroy_stacks (pTHX) 655coro_destruct_stacks (pTHX)
544{ 656{
545 if (!IN_DESTRUCT)
546 {
547 /* restore all saved variables and stuff */
548 LEAVE_SCOPE (0);
549 assert (PL_tmps_floor == -1);
550
551 /* free all temporaries */
552 FREETMPS;
553 assert (PL_tmps_ix == -1);
554
555 /* unwind all extra stacks */
556 POPSTACK_TO (PL_mainstack);
557
558 /* unwind main stack */
559 dounwind (-1);
560 }
561
562 while (PL_curstackinfo->si_next) 657 while (PL_curstackinfo->si_next)
563 PL_curstackinfo = PL_curstackinfo->si_next; 658 PL_curstackinfo = PL_curstackinfo->si_next;
564 659
565 while (PL_curstackinfo) 660 while (PL_curstackinfo)
566 { 661 {
… …
576 671
577 Safefree (PL_tmps_stack); 672 Safefree (PL_tmps_stack);
578 Safefree (PL_markstack); 673 Safefree (PL_markstack);
579 Safefree (PL_scopestack); 674 Safefree (PL_scopestack);
580 Safefree (PL_savestack); 675 Safefree (PL_savestack);
581#if !PERL_VERSION_ATLEAST (5,9,0) 676#if !PERL_VERSION_ATLEAST (5,10,0)
582 Safefree (PL_retstack); 677 Safefree (PL_retstack);
583#endif 678#endif
584} 679}
585 680
586static size_t 681static size_t
587coro_rss (pTHX_ struct coro *coro) 682coro_rss (pTHX_ struct coro *coro)
588{ 683{
589 size_t rss = sizeof (coro); 684 size_t rss = sizeof (*coro);
590 685
591 if (coro->mainstack) 686 if (coro->mainstack)
592 { 687 {
688 perl_slots tmp_slot;
689 perl_slots *slot;
690
593 if (coro->flags & CF_RUNNING) 691 if (coro->flags & CF_RUNNING)
594 { 692 {
693 slot = &tmp_slot;
694
595 #define VAR(name,type)coro->name = PL_ ## name; 695 #define VAR(name,type) slot->name = PL_ ## name;
596 # include "state.h" 696 # include "state.h"
597 #undef VAR 697 #undef VAR
598 } 698 }
699 else
700 slot = coro->slot;
599 701
702 if (slot)
703 {
600 rss += sizeof (coro->curstackinfo); 704 rss += sizeof (slot->curstackinfo);
601 rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
602 rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 705 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
603 rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *); 706 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
604 rss += coro->tmps_max * sizeof (SV *); 707 rss += slot->tmps_max * sizeof (SV *);
605 rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32); 708 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
606 rss += coro->scopestack_max * sizeof (I32); 709 rss += slot->scopestack_max * sizeof (I32);
607 rss += coro->savestack_max * sizeof (ANY); 710 rss += slot->savestack_max * sizeof (ANY);
608 711
609#if !PERL_VERSION_ATLEAST (5,9,0) 712#if !PERL_VERSION_ATLEAST (5,10,0)
610 rss += coro->retstack_max * sizeof (OP *); 713 rss += slot->retstack_max * sizeof (OP *);
611#endif 714#endif
715 }
612 } 716 }
613 717
614 return rss; 718 return rss;
615} 719}
616 720
617/** coroutine stack handling ************************************************/ 721/** coroutine stack handling ************************************************/
618 722
723static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
724static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
725static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
726
727/* apparently < 5.8.8 */
728#ifndef MgPV_nolen_const
729#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
730 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
731 (const char*)(mg)->mg_ptr)
732#endif
733
734/*
735 * This overrides the default magic get method of %SIG elements.
736 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
737 * and instead of tryign to save and restore the hash elements, we just provide
738 * readback here.
739 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
740 * not expecting this to actually change the hook. This is a potential problem
741 * when a schedule happens then, but we ignore this.
742 */
619static void 743static int
744coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
745{
746 const char *s = MgPV_nolen_const (mg);
747
748 if (*s == '_')
749 {
750 SV **svp = 0;
751
752 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
753 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
754
755 if (svp)
756 {
757 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
758 return 0;
759 }
760 }
761
762 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
763}
764
765static int
766coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
767{
768 const char *s = MgPV_nolen_const (mg);
769
770 if (*s == '_')
771 {
772 SV **svp = 0;
773
774 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
775 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
776
777 if (svp)
778 {
779 SV *old = *svp;
780 *svp = 0;
781 SvREFCNT_dec (old);
782 return 0;
783 }
784 }
785
786 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
787}
788
789static int
790coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
791{
792 const char *s = MgPV_nolen_const (mg);
793
794 if (*s == '_')
795 {
796 SV **svp = 0;
797
798 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
799 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
800
801 if (svp)
802 {
803 SV *old = *svp;
804 *svp = newSVsv (sv);
805 SvREFCNT_dec (old);
806 return 0;
807 }
808 }
809
810 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
811}
812
813static void
814prepare_nop (pTHX_ struct coro_transfer_args *ta)
815{
816 /* kind of mega-hacky, but works */
817 ta->next = ta->prev = (struct coro *)ta;
818}
819
820static int
821slf_check_nop (pTHX_ struct CoroSLF *frame)
822{
823 return 0;
824}
825
826static void
620setup_coro (pTHX_ struct coro *coro) 827coro_setup (pTHX_ struct coro *coro)
621{ 828{
622 /* 829 /*
623 * emulate part of the perl startup here. 830 * emulate part of the perl startup here.
624 */ 831 */
625 coro_init_stacks (aTHX); 832 coro_init_stacks (aTHX);
… …
627 PL_runops = RUNOPS_DEFAULT; 834 PL_runops = RUNOPS_DEFAULT;
628 PL_curcop = &PL_compiling; 835 PL_curcop = &PL_compiling;
629 PL_in_eval = EVAL_NULL; 836 PL_in_eval = EVAL_NULL;
630 PL_comppad = 0; 837 PL_comppad = 0;
631 PL_curpm = 0; 838 PL_curpm = 0;
839 PL_curpad = 0;
632 PL_localizing = 0; 840 PL_localizing = 0;
633 PL_dirty = 0; 841 PL_dirty = 0;
634 PL_restartop = 0; 842 PL_restartop = 0;
843#if PERL_VERSION_ATLEAST (5,10,0)
844 PL_parser = 0;
845#endif
846
847 /* recreate the die/warn hooks */
848 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
849 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
850
851 GvSV (PL_defgv) = newSV (0);
852 GvAV (PL_defgv) = coro->args; coro->args = 0;
853 GvSV (PL_errgv) = newSV (0);
854 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
855 PL_rs = newSVsv (GvSV (irsgv));
856 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
635 857
636 { 858 {
637 dSP; 859 dSP;
638 LOGOP myop; 860 UNOP myop;
639 861
640 SvREFCNT_dec (GvAV (PL_defgv));
641 GvAV (PL_defgv) = coro->args; coro->args = 0;
642
643 Zero (&myop, 1, LOGOP); 862 Zero (&myop, 1, UNOP);
644 myop.op_next = Nullop; 863 myop.op_next = Nullop;
645 myop.op_flags = OPf_WANT_VOID; 864 myop.op_flags = OPf_WANT_VOID;
646 865
647 PUSHMARK (SP); 866 PUSHMARK (SP);
648 XPUSHs (av_shift (GvAV (PL_defgv))); 867 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
649 PUTBACK; 868 PUTBACK;
650 PL_op = (OP *)&myop; 869 PL_op = (OP *)&myop;
651 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 870 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
652 SPAGAIN; 871 SPAGAIN;
653 } 872 }
654 873
655 ENTER; /* necessary e.g. for dounwind */ 874 /* this newly created coroutine might be run on an existing cctx which most
875 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
876 */
877 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
878 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
656} 879}
657 880
658static void 881static void
882coro_destruct (pTHX_ struct coro *coro)
883{
884 if (!IN_DESTRUCT)
885 {
886 /* restore all saved variables and stuff */
887 LEAVE_SCOPE (0);
888 assert (PL_tmps_floor == -1);
889
890 /* free all temporaries */
891 FREETMPS;
892 assert (PL_tmps_ix == -1);
893
894 /* unwind all extra stacks */
895 POPSTACK_TO (PL_mainstack);
896
897 /* unwind main stack */
898 dounwind (-1);
899 }
900
901 SvREFCNT_dec (GvSV (PL_defgv));
902 SvREFCNT_dec (GvAV (PL_defgv));
903 SvREFCNT_dec (GvSV (PL_errgv));
904 SvREFCNT_dec (PL_defoutgv);
905 SvREFCNT_dec (PL_rs);
906 SvREFCNT_dec (GvSV (irsgv));
907
908 SvREFCNT_dec (PL_diehook);
909 SvREFCNT_dec (PL_warnhook);
910
911 SvREFCNT_dec (coro->saved_deffh);
912 SvREFCNT_dec (coro->throw);
913
914 coro_destruct_stacks (aTHX);
915}
916
917INLINE void
659free_coro_mortal (pTHX) 918free_coro_mortal (pTHX)
660{ 919{
661 if (coro_mortal) 920 if (expect_true (coro_mortal))
662 { 921 {
663 SvREFCNT_dec (coro_mortal); 922 SvREFCNT_dec (coro_mortal);
664 coro_mortal = 0; 923 coro_mortal = 0;
665 } 924 }
666} 925}
… …
668static int 927static int
669runops_trace (pTHX) 928runops_trace (pTHX)
670{ 929{
671 COP *oldcop = 0; 930 COP *oldcop = 0;
672 int oldcxix = -2; 931 int oldcxix = -2;
673 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 932 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
674 coro_cctx *cctx = coro->cctx; 933 coro_cctx *cctx = coro->cctx;
675 934
676 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 935 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
677 { 936 {
678 PERL_ASYNC_CHECK (); 937 PERL_ASYNC_CHECK ();
… …
695 bot = PL_stack_base + cx->blk_oldsp + 1; 954 bot = PL_stack_base + cx->blk_oldsp + 1;
696 top = cx->blk_gimme == G_ARRAY ? SP + 1 955 top = cx->blk_gimme == G_ARRAY ? SP + 1
697 : cx->blk_gimme == G_SCALAR ? bot + 1 956 : cx->blk_gimme == G_SCALAR ? bot + 1
698 : bot; 957 : bot;
699 958
959 av_extend (av, top - bot);
700 while (bot < top) 960 while (bot < top)
701 av_push (av, SvREFCNT_inc (*bot++)); 961 av_push (av, SvREFCNT_inc_NN (*bot++));
702 962
703 PL_runops = RUNOPS_DEFAULT; 963 PL_runops = RUNOPS_DEFAULT;
704 ENTER; 964 ENTER;
705 SAVETMPS; 965 SAVETMPS;
706 EXTEND (SP, 3); 966 EXTEND (SP, 3);
… …
744 SAVETMPS; 1004 SAVETMPS;
745 EXTEND (SP, 3); 1005 EXTEND (SP, 3);
746 PUSHMARK (SP); 1006 PUSHMARK (SP);
747 PUSHs (&PL_sv_yes); 1007 PUSHs (&PL_sv_yes);
748 PUSHs (fullname); 1008 PUSHs (fullname);
749 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1009 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
750 PUTBACK; 1010 PUTBACK;
751 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1011 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
752 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1012 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
753 SPAGAIN; 1013 SPAGAIN;
754 FREETMPS; 1014 FREETMPS;
… …
786 1046
787 TAINT_NOT; 1047 TAINT_NOT;
788 return 0; 1048 return 0;
789} 1049}
790 1050
1051static void
1052prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx)
1053{
1054 ta->prev = (struct coro *)cctx;
1055 ta->next = 0;
1056}
1057
791/* inject a fake call to Coro::State::_cctx_init into the execution */ 1058/* inject a fake call to Coro::State::_cctx_init into the execution */
792/* _cctx_init should be careful, as it could be called at almost any time */ 1059/* _cctx_init should be careful, as it could be called at almost any time */
793/* during execution of a perl program */ 1060/* during execution of a perl program */
1061/* also initialises PL_top_env */
794static void NOINLINE 1062static void NOINLINE
795prepare_cctx (pTHX_ coro_cctx *cctx) 1063cctx_prepare (pTHX_ coro_cctx *cctx)
796{ 1064{
797 dSP; 1065 dSP;
798 LOGOP myop; 1066 UNOP myop;
799 1067
800 PL_top_env = &PL_start_env; 1068 PL_top_env = &PL_start_env;
801 1069
802 if (cctx->flags & CC_TRACE) 1070 if (cctx->flags & CC_TRACE)
803 PL_runops = runops_trace; 1071 PL_runops = runops_trace;
804 1072
805 Zero (&myop, 1, LOGOP); 1073 Zero (&myop, 1, UNOP);
806 myop.op_next = PL_op; 1074 myop.op_next = PL_op;
807 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1075 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
808 1076
809 PUSHMARK (SP); 1077 PUSHMARK (SP);
810 EXTEND (SP, 2); 1078 EXTEND (SP, 2);
811 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1079 PUSHs (sv_2mortal (newSViv ((IV)cctx)));
812 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1080 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
813 PUTBACK; 1081 PUTBACK;
814 PL_op = (OP *)&myop; 1082 PL_op = (OP *)&myop;
815 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1083 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
816 SPAGAIN; 1084 SPAGAIN;
817} 1085}
818 1086
1087/* the tail of transfer: execute stuff we can only do after a transfer */
1088INLINE void
1089transfer_tail (pTHX)
1090{
1091 free_coro_mortal (aTHX);
1092}
1093
819/* 1094/*
820 * this is a _very_ stripped down perl interpreter ;) 1095 * this is a _very_ stripped down perl interpreter ;)
821 */ 1096 */
822static void 1097static void
823coro_run (void *arg) 1098cctx_run (void *arg)
824{ 1099{
1100#ifdef USE_ITHREADS
1101# if CORO_PTHREAD
1102 PERL_SET_CONTEXT (coro_thx);
1103# endif
1104#endif
1105 {
825 dTHX; 1106 dTHX;
826 1107
827 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1108 /* normally we would need to skip the entersub here */
828 UNLOCK; 1109 /* not doing so will re-execute it, which is exactly what we want */
829
830 /* we now skip the entersub that lead to transfer() */
831 PL_op = PL_op->op_next; 1110 /* PL_nop = PL_nop->op_next */
832 1111
833 /* inject a fake subroutine call to cctx_init */ 1112 /* inject a fake subroutine call to cctx_init */
834 prepare_cctx (aTHX_ (coro_cctx *)arg); 1113 cctx_prepare (aTHX_ (coro_cctx *)arg);
835 1114
1115 /* cctx_run is the alternative tail of transfer() */
1116 transfer_tail (aTHX);
1117
836 /* somebody or something will hit me for both perl_run and PL_restartop */ 1118 /* somebody or something will hit me for both perl_run and PL_restartop */
837 PL_restartop = PL_op; 1119 PL_restartop = PL_op;
838 perl_run (PL_curinterp); 1120 perl_run (PL_curinterp);
839 1121
840 /* 1122 /*
841 * If perl-run returns we assume exit() was being called or the coro 1123 * If perl-run returns we assume exit() was being called or the coro
842 * fell off the end, which seems to be the only valid (non-bug) 1124 * fell off the end, which seems to be the only valid (non-bug)
843 * reason for perl_run to return. We try to exit by jumping to the 1125 * reason for perl_run to return. We try to exit by jumping to the
844 * bootstrap-time "top" top_env, as we cannot restore the "main" 1126 * bootstrap-time "top" top_env, as we cannot restore the "main"
845 * coroutine as Coro has no such concept 1127 * coroutine as Coro has no such concept
846 */ 1128 */
847 PL_top_env = main_top_env; 1129 PL_top_env = main_top_env;
848 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1130 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1131 }
849} 1132}
850 1133
851static coro_cctx * 1134static coro_cctx *
852cctx_new () 1135cctx_new ()
853{ 1136{
854 coro_cctx *cctx; 1137 coro_cctx *cctx;
1138
1139 ++cctx_count;
1140 New (0, cctx, 1, coro_cctx);
1141
1142 cctx->gen = cctx_gen;
1143 cctx->flags = 0;
1144 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1145
1146 return cctx;
1147}
1148
1149/* create a new cctx only suitable as source */
1150static coro_cctx *
1151cctx_new_empty ()
1152{
1153 coro_cctx *cctx = cctx_new ();
1154
1155 cctx->sptr = 0;
1156 coro_create (&cctx->cctx, 0, 0, 0, 0);
1157
1158 return cctx;
1159}
1160
1161/* create a new cctx suitable as destination/running a perl interpreter */
1162static coro_cctx *
1163cctx_new_run ()
1164{
1165 coro_cctx *cctx = cctx_new ();
855 void *stack_start; 1166 void *stack_start;
856 size_t stack_size; 1167 size_t stack_size;
857 1168
858 ++cctx_count;
859
860 Newz (0, cctx, 1, coro_cctx);
861
862#if HAVE_MMAP 1169#if HAVE_MMAP
863
864 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1170 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
865 /* mmap supposedly does allocate-on-write for us */ 1171 /* mmap supposedly does allocate-on-write for us */
866 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1172 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
867 1173
868 if (cctx->sptr != (void *)-1) 1174 if (cctx->sptr != (void *)-1)
869 { 1175 {
870# if CORO_STACKGUARD 1176 #if CORO_STACKGUARD
871 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1177 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
872# endif 1178 #endif
873 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1179 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
874 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1180 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
875 cctx->flags |= CC_MAPPED; 1181 cctx->flags |= CC_MAPPED;
876 } 1182 }
877 else 1183 else
878#endif 1184#endif
879 { 1185 {
880 cctx->ssize = coro_stacksize * (long)sizeof (long); 1186 cctx->ssize = cctx_stacksize * (long)sizeof (long);
881 New (0, cctx->sptr, coro_stacksize, long); 1187 New (0, cctx->sptr, cctx_stacksize, long);
882 1188
883 if (!cctx->sptr) 1189 if (!cctx->sptr)
884 { 1190 {
885 perror ("FATAL: unable to allocate stack for coroutine"); 1191 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
886 _exit (EXIT_FAILURE); 1192 _exit (EXIT_FAILURE);
887 } 1193 }
888 1194
889 stack_start = cctx->sptr; 1195 stack_start = cctx->sptr;
890 stack_size = cctx->ssize; 1196 stack_size = cctx->ssize;
891 } 1197 }
892 1198
893 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1199 #if CORO_USE_VALGRIND
1200 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1201 #endif
1202
894 coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); 1203 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
895 1204
896 return cctx; 1205 return cctx;
897} 1206}
898 1207
899static void 1208static void
… …
901{ 1210{
902 if (!cctx) 1211 if (!cctx)
903 return; 1212 return;
904 1213
905 --cctx_count; 1214 --cctx_count;
1215 coro_destroy (&cctx->cctx);
906 1216
1217 /* coro_transfer creates new, empty cctx's */
1218 if (cctx->sptr)
1219 {
907#if CORO_USE_VALGRIND 1220 #if CORO_USE_VALGRIND
908 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1221 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
909#endif 1222 #endif
910 1223
911#if HAVE_MMAP 1224#if HAVE_MMAP
912 if (cctx->flags & CC_MAPPED) 1225 if (cctx->flags & CC_MAPPED)
913 munmap (cctx->sptr, cctx->ssize); 1226 munmap (cctx->sptr, cctx->ssize);
914 else 1227 else
915#endif 1228#endif
916 Safefree (cctx->sptr); 1229 Safefree (cctx->sptr);
1230 }
917 1231
918 Safefree (cctx); 1232 Safefree (cctx);
919} 1233}
1234
1235/* wether this cctx should be destructed */
1236#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
920 1237
921static coro_cctx * 1238static coro_cctx *
922cctx_get (pTHX) 1239cctx_get (pTHX)
923{ 1240{
924 while (cctx_first) 1241 while (expect_true (cctx_first))
925 { 1242 {
926 coro_cctx *cctx = cctx_first; 1243 coro_cctx *cctx = cctx_first;
927 cctx_first = cctx->next; 1244 cctx_first = cctx->next;
928 --cctx_idle; 1245 --cctx_idle;
929 1246
930 if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE)) 1247 if (expect_true (!CCTX_EXPIRED (cctx)))
931 return cctx; 1248 return cctx;
932 1249
933 cctx_destroy (cctx); 1250 cctx_destroy (cctx);
934 } 1251 }
935 1252
936 return cctx_new (); 1253 return cctx_new_run ();
937} 1254}
938 1255
939static void 1256static void
940cctx_put (coro_cctx *cctx) 1257cctx_put (coro_cctx *cctx)
941{ 1258{
1259 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1260
942 /* free another cctx if overlimit */ 1261 /* free another cctx if overlimit */
943 if (cctx_idle >= MAX_IDLE_CCTX) 1262 if (expect_false (cctx_idle >= cctx_max_idle))
944 { 1263 {
945 coro_cctx *first = cctx_first; 1264 coro_cctx *first = cctx_first;
946 cctx_first = first->next; 1265 cctx_first = first->next;
947 --cctx_idle; 1266 --cctx_idle;
948 1267
… …
954 cctx_first = cctx; 1273 cctx_first = cctx;
955} 1274}
956 1275
957/** coroutine switching *****************************************************/ 1276/** coroutine switching *****************************************************/
958 1277
959static void NOINLINE 1278static void
960transfer_check (pTHX_ struct coro *prev, struct coro *next) 1279transfer_check (pTHX_ struct coro *prev, struct coro *next)
961{ 1280{
962 if (prev != next) 1281 if (expect_true (prev != next))
963 { 1282 {
964 if (!(prev->flags & (CF_RUNNING | CF_NEW))) 1283 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
965 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1284 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
966 1285
967 if (next->flags & CF_RUNNING) 1286 if (expect_false (next->flags & CF_RUNNING))
968 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1287 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
969 1288
970 if (next->flags & CF_DESTROYED) 1289 if (expect_false (next->flags & CF_DESTROYED))
971 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1290 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
972 1291
1292#if !PERL_VERSION_ATLEAST (5,10,0)
973 if (PL_lex_state != LEX_NOTPARSING) 1293 if (expect_false (PL_lex_state != LEX_NOTPARSING))
974 croak ("Coro::State::transfer called while parsing, but this is not supported"); 1294 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1295#endif
975 } 1296 }
976} 1297}
977 1298
978/* always use the TRANSFER macro */ 1299/* always use the TRANSFER macro */
979static void NOINLINE 1300static void NOINLINE
980transfer (pTHX_ struct coro *prev, struct coro *next) 1301transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
981{ 1302{
982 dSTACKLEVEL; 1303 dSTACKLEVEL;
983 1304
984 /* sometimes transfer is only called to set idle_sp */ 1305 /* sometimes transfer is only called to set idle_sp */
985 if (!next) 1306 if (expect_false (!next))
986 { 1307 {
987 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1308 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel;
988 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1309 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
989 } 1310 }
990 else if (prev != next) 1311 else if (expect_true (prev != next))
991 { 1312 {
992 coro_cctx *prev__cctx; 1313 coro_cctx *prev__cctx;
993 1314
994 if (prev->flags & CF_NEW) 1315 if (expect_false (prev->flags & CF_NEW))
995 { 1316 {
996 /* create a new empty context */ 1317 /* create a new empty/source context */
997 Newz (0, prev->cctx, 1, coro_cctx); 1318 prev->cctx = cctx_new_empty ();
998 prev->flags &= ~CF_NEW; 1319 prev->flags &= ~CF_NEW;
999 prev->flags |= CF_RUNNING; 1320 prev->flags |= CF_RUNNING;
1000 } 1321 }
1001 1322
1002 prev->flags &= ~CF_RUNNING; 1323 prev->flags &= ~CF_RUNNING;
1003 next->flags |= CF_RUNNING; 1324 next->flags |= CF_RUNNING;
1004 1325
1005 LOCK; 1326 /* first get rid of the old state */
1327 save_perl (aTHX_ prev);
1006 1328
1007 if (next->flags & CF_NEW) 1329 if (expect_false (next->flags & CF_NEW))
1008 { 1330 {
1009 /* need to start coroutine */ 1331 /* need to start coroutine */
1010 next->flags &= ~CF_NEW; 1332 next->flags &= ~CF_NEW;
1011 /* first get rid of the old state */
1012 save_perl (aTHX_ prev);
1013 /* setup coroutine call */ 1333 /* setup coroutine call */
1014 setup_coro (aTHX_ next); 1334 coro_setup (aTHX_ next);
1015 } 1335 }
1016 else 1336 else
1337 load_perl (aTHX_ next);
1338
1339 prev__cctx = prev->cctx;
1340
1341 /* possibly untie and reuse the cctx */
1342 if (expect_true (
1343 prev__cctx->idle_sp == (void *)stacklevel
1344 && !(prev__cctx->flags & CC_TRACE)
1345 && !force_cctx
1346 ))
1017 { 1347 {
1018 /* coroutine already started */
1019 save_perl (aTHX_ prev);
1020 load_perl (aTHX_ next);
1021 }
1022
1023 prev__cctx = prev->cctx;
1024
1025 /* possibly "free" the cctx */
1026 if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
1027 {
1028 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1348 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1029 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1349 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1030 1350
1031 prev->cctx = 0; 1351 prev->cctx = 0;
1352
1353 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1354 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1355 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1356 if (!next->cctx)
1357 next->cctx = cctx_get (aTHX);
1032 1358
1033 cctx_put (prev__cctx); 1359 cctx_put (prev__cctx);
1034 } 1360 }
1035 1361
1036 ++next->usecount; 1362 ++next->usecount;
1037 1363
1038 if (!next->cctx) 1364 if (expect_true (!next->cctx))
1039 next->cctx = cctx_get (aTHX); 1365 next->cctx = cctx_get (aTHX);
1040 1366
1041 if (prev__cctx != next->cctx) 1367 if (expect_false (prev__cctx != next->cctx))
1042 { 1368 {
1043 prev__cctx->top_env = PL_top_env; 1369 prev__cctx->top_env = PL_top_env;
1044 PL_top_env = next->cctx->top_env; 1370 PL_top_env = next->cctx->top_env;
1045 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1371 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1046 } 1372 }
1047 1373
1048 free_coro_mortal (aTHX); 1374 transfer_tail (aTHX);
1049 UNLOCK;
1050 } 1375 }
1051} 1376}
1052 1377
1053struct transfer_args
1054{
1055 struct coro *prev, *next;
1056};
1057
1058#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1378#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1059#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1379#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1060 1380
1061/** high level stuff ********************************************************/ 1381/** high level stuff ********************************************************/
1062 1382
1063static int 1383static int
1064coro_state_destroy (pTHX_ struct coro *coro) 1384coro_state_destroy (pTHX_ struct coro *coro)
1065{ 1385{
1066 if (coro->flags & CF_DESTROYED) 1386 if (coro->flags & CF_DESTROYED)
1067 return 0; 1387 return 0;
1388
1389 if (coro->on_destroy)
1390 coro->on_destroy (aTHX_ coro);
1068 1391
1069 coro->flags |= CF_DESTROYED; 1392 coro->flags |= CF_DESTROYED;
1070 1393
1071 if (coro->flags & CF_READY) 1394 if (coro->flags & CF_READY)
1072 { 1395 {
1073 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1396 /* reduce nready, as destroying a ready coro effectively unreadies it */
1074 /* alternative: look through all ready queues and remove the coro */ 1397 /* alternative: look through all ready queues and remove the coro */
1075 LOCK;
1076 --coro_nready; 1398 --coro_nready;
1077 UNLOCK;
1078 } 1399 }
1079 else 1400 else
1080 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1401 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1081 1402
1082 if (coro->mainstack && coro->mainstack != main_mainstack) 1403 if (coro->mainstack && coro->mainstack != main_mainstack)
1083 { 1404 {
1084 struct coro temp; 1405 struct coro temp;
1085 1406
1086 assert (!(coro->flags & CF_RUNNING)); 1407 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1087
1088 Zero (&temp, 1, struct coro);
1089 temp.save = CORO_SAVE_ALL;
1090
1091 if (coro->flags & CF_RUNNING)
1092 croak ("FATAL: tried to destroy currently running coroutine");
1093 1408
1094 save_perl (aTHX_ &temp); 1409 save_perl (aTHX_ &temp);
1095 load_perl (aTHX_ coro); 1410 load_perl (aTHX_ coro);
1096 1411
1097 coro_destroy_stacks (aTHX); 1412 coro_destruct (aTHX_ coro);
1098 1413
1099 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ 1414 load_perl (aTHX_ &temp);
1100 1415
1101 coro->mainstack = 0; 1416 coro->slot = 0;
1102 } 1417 }
1103 1418
1104 cctx_destroy (coro->cctx); 1419 cctx_destroy (coro->cctx);
1105 SvREFCNT_dec (coro->args); 1420 SvREFCNT_dec (coro->args);
1106 1421
… …
1148# define MGf_DUP 0 1463# define MGf_DUP 0
1149#endif 1464#endif
1150}; 1465};
1151 1466
1152static void 1467static void
1153prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1468prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1154{ 1469{
1155 ta->prev = SvSTATE (prev_sv); 1470 ta->prev = SvSTATE (prev_sv);
1156 ta->next = SvSTATE (next_sv); 1471 ta->next = SvSTATE (next_sv);
1157 TRANSFER_CHECK (*ta); 1472 TRANSFER_CHECK (*ta);
1158} 1473}
1159 1474
1160static void 1475static void
1161api_transfer (SV *prev_sv, SV *next_sv) 1476api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1162{ 1477{
1163 dTHX;
1164 struct transfer_args ta; 1478 struct coro_transfer_args ta;
1165 1479
1166 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1480 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1167 TRANSFER (ta); 1481 TRANSFER (ta, 1);
1168}
1169
1170static int
1171api_save (SV *coro_sv, int new_save)
1172{
1173 dTHX;
1174 struct coro *coro = SvSTATE (coro_sv);
1175 int old_save = coro->save;
1176
1177 if (new_save >= 0)
1178 coro->save = new_save;
1179
1180 return old_save;
1181} 1482}
1182 1483
1183/** Coro ********************************************************************/ 1484/** Coro ********************************************************************/
1184 1485
1185static void 1486INLINE void
1186coro_enq (pTHX_ SV *coro_sv) 1487coro_enq (pTHX_ struct coro *coro)
1187{ 1488{
1188 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1489 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1189} 1490}
1190 1491
1191static SV * 1492INLINE SV *
1192coro_deq (pTHX_ int min_prio) 1493coro_deq (pTHX)
1193{ 1494{
1194 int prio = PRIO_MAX - PRIO_MIN; 1495 int prio;
1195 1496
1196 min_prio -= PRIO_MIN;
1197 if (min_prio < 0)
1198 min_prio = 0;
1199
1200 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1497 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1201 if (AvFILLp (coro_ready [prio]) >= 0) 1498 if (AvFILLp (coro_ready [prio]) >= 0)
1202 return av_shift (coro_ready [prio]); 1499 return av_shift (coro_ready [prio]);
1203 1500
1204 return 0; 1501 return 0;
1205} 1502}
1206 1503
1207static int 1504static int
1208api_ready (SV *coro_sv) 1505api_ready (pTHX_ SV *coro_sv)
1209{ 1506{
1210 dTHX;
1211 struct coro *coro; 1507 struct coro *coro;
1508 SV *sv_hook;
1509 void (*xs_hook)(void);
1212 1510
1213 if (SvROK (coro_sv)) 1511 if (SvROK (coro_sv))
1214 coro_sv = SvRV (coro_sv); 1512 coro_sv = SvRV (coro_sv);
1215 1513
1216 coro = SvSTATE (coro_sv); 1514 coro = SvSTATE (coro_sv);
… …
1218 if (coro->flags & CF_READY) 1516 if (coro->flags & CF_READY)
1219 return 0; 1517 return 0;
1220 1518
1221 coro->flags |= CF_READY; 1519 coro->flags |= CF_READY;
1222 1520
1223 LOCK; 1521 sv_hook = coro_nready ? 0 : coro_readyhook;
1224 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1522 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1523
1524 coro_enq (aTHX_ coro);
1225 ++coro_nready; 1525 ++coro_nready;
1226 UNLOCK; 1526
1527 if (sv_hook)
1528 {
1529 dSP;
1530
1531 ENTER;
1532 SAVETMPS;
1533
1534 PUSHMARK (SP);
1535 PUTBACK;
1536 call_sv (sv_hook, G_DISCARD);
1537 SPAGAIN;
1538
1539 FREETMPS;
1540 LEAVE;
1541 }
1542
1543 if (xs_hook)
1544 xs_hook ();
1227 1545
1228 return 1; 1546 return 1;
1229} 1547}
1230 1548
1231static int 1549static int
1232api_is_ready (SV *coro_sv) 1550api_is_ready (pTHX_ SV *coro_sv)
1233{ 1551{
1234 dTHX;
1235 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1552 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1236} 1553}
1237 1554
1238static void 1555INLINE void
1239prepare_schedule (pTHX_ struct transfer_args *ta) 1556prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1240{ 1557{
1241 SV *prev_sv, *next_sv; 1558 SV *prev_sv, *next_sv;
1242 1559
1243 for (;;) 1560 for (;;)
1244 { 1561 {
1245 LOCK;
1246 next_sv = coro_deq (aTHX_ PRIO_MIN); 1562 next_sv = coro_deq (aTHX);
1247 1563
1248 /* nothing to schedule: call the idle handler */ 1564 /* nothing to schedule: call the idle handler */
1249 if (!next_sv) 1565 if (expect_false (!next_sv))
1250 { 1566 {
1251 dSP; 1567 dSP;
1252 UNLOCK;
1253 1568
1254 ENTER; 1569 ENTER;
1255 SAVETMPS; 1570 SAVETMPS;
1256 1571
1257 PUSHMARK (SP); 1572 PUSHMARK (SP);
1258 PUTBACK; 1573 PUTBACK;
1259 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1574 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1575 SPAGAIN;
1260 1576
1261 FREETMPS; 1577 FREETMPS;
1262 LEAVE; 1578 LEAVE;
1263 continue; 1579 continue;
1264 } 1580 }
1265 1581
1266 ta->next = SvSTATE (next_sv); 1582 ta->next = SvSTATE_hv (next_sv);
1267 1583
1268 /* cannot transfer to destroyed coros, skip and look for next */ 1584 /* cannot transfer to destroyed coros, skip and look for next */
1269 if (ta->next->flags & CF_DESTROYED) 1585 if (expect_false (ta->next->flags & CF_DESTROYED))
1270 { 1586 {
1271 UNLOCK;
1272 SvREFCNT_dec (next_sv); 1587 SvREFCNT_dec (next_sv);
1273 /* coro_nready is already taken care of by destroy */ 1588 /* coro_nready has already been taken care of by destroy */
1274 continue; 1589 continue;
1275 } 1590 }
1276 1591
1277 --coro_nready; 1592 --coro_nready;
1278 UNLOCK;
1279 break; 1593 break;
1280 } 1594 }
1281 1595
1282 /* free this only after the transfer */ 1596 /* free this only after the transfer */
1283 prev_sv = SvRV (coro_current); 1597 prev_sv = SvRV (coro_current);
1284 ta->prev = SvSTATE (prev_sv); 1598 ta->prev = SvSTATE_hv (prev_sv);
1285 TRANSFER_CHECK (*ta); 1599 TRANSFER_CHECK (*ta);
1286 assert (ta->next->flags & CF_READY); 1600 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1287 ta->next->flags &= ~CF_READY; 1601 ta->next->flags &= ~CF_READY;
1288 SvRV_set (coro_current, next_sv); 1602 SvRV_set (coro_current, next_sv);
1289 1603
1290 LOCK;
1291 free_coro_mortal (aTHX); 1604 free_coro_mortal (aTHX);
1292 coro_mortal = prev_sv; 1605 coro_mortal = prev_sv;
1293 UNLOCK;
1294} 1606}
1295 1607
1296static void 1608INLINE void
1297prepare_cede (pTHX_ struct transfer_args *ta) 1609prepare_cede (pTHX_ struct coro_transfer_args *ta)
1298{ 1610{
1299 api_ready (coro_current); 1611 api_ready (aTHX_ coro_current);
1300 prepare_schedule (aTHX_ ta); 1612 prepare_schedule (aTHX_ ta);
1301} 1613}
1302 1614
1615INLINE void
1616prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1617{
1618 SV *prev = SvRV (coro_current);
1619
1620 if (coro_nready)
1621 {
1622 prepare_schedule (aTHX_ ta);
1623 api_ready (aTHX_ prev);
1624 }
1625 else
1626 prepare_nop (aTHX_ ta);
1627}
1628
1629static void
1630api_schedule (pTHX)
1631{
1632 struct coro_transfer_args ta;
1633
1634 prepare_schedule (aTHX_ &ta);
1635 TRANSFER (ta, 1);
1636}
1637
1303static int 1638static int
1304prepare_cede_notself (pTHX_ struct transfer_args *ta) 1639api_cede (pTHX)
1305{ 1640{
1306 if (coro_nready) 1641 struct coro_transfer_args ta;
1307 { 1642
1308 SV *prev = SvRV (coro_current);
1309 prepare_schedule (aTHX_ ta); 1643 prepare_cede (aTHX_ &ta);
1310 api_ready (prev); 1644
1645 if (expect_true (ta.prev != ta.next))
1646 {
1647 TRANSFER (ta, 1);
1311 return 1; 1648 return 1;
1312 } 1649 }
1313 else 1650 else
1314 return 0; 1651 return 0;
1315} 1652}
1316 1653
1317static void
1318api_schedule (void)
1319{
1320 dTHX;
1321 struct transfer_args ta;
1322
1323 prepare_schedule (aTHX_ &ta);
1324 TRANSFER (ta);
1325}
1326
1327static int 1654static int
1328api_cede (void) 1655api_cede_notself (pTHX)
1329{ 1656{
1330 dTHX; 1657 if (coro_nready)
1658 {
1331 struct transfer_args ta; 1659 struct coro_transfer_args ta;
1332 1660
1333 prepare_cede (aTHX_ &ta); 1661 prepare_cede_notself (aTHX_ &ta);
1334
1335 if (ta.prev != ta.next)
1336 {
1337 TRANSFER (ta); 1662 TRANSFER (ta, 1);
1338 return 1; 1663 return 1;
1339 } 1664 }
1340 else 1665 else
1341 return 0; 1666 return 0;
1342} 1667}
1343 1668
1344static int 1669static void
1345api_cede_notself (void)
1346{
1347 dTHX;
1348 struct transfer_args ta;
1349
1350 if (prepare_cede_notself (aTHX_ &ta))
1351 {
1352 TRANSFER (ta);
1353 return 1;
1354 }
1355 else
1356 return 0;
1357}
1358
1359static void
1360api_trace (SV *coro_sv, int flags) 1670api_trace (pTHX_ SV *coro_sv, int flags)
1361{ 1671{
1362 dTHX;
1363 struct coro *coro = SvSTATE (coro_sv); 1672 struct coro *coro = SvSTATE (coro_sv);
1364 1673
1365 if (flags & CC_TRACE) 1674 if (flags & CC_TRACE)
1366 { 1675 {
1367 if (!coro->cctx) 1676 if (!coro->cctx)
1368 coro->cctx = cctx_new (); 1677 coro->cctx = cctx_new_run ();
1369 else if (!(coro->cctx->flags & CC_TRACE)) 1678 else if (!(coro->cctx->flags & CC_TRACE))
1370 croak ("cannot enable tracing on coroutine with custom stack"); 1679 croak ("cannot enable tracing on coroutine with custom stack,");
1371 1680
1372 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1681 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1373 } 1682 }
1374 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1683 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1375 { 1684 {
1376 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL); 1685 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1377 1686
1378 if (coro->flags & CF_RUNNING) 1687 if (coro->flags & CF_RUNNING)
1379 PL_runops = RUNOPS_DEFAULT; 1688 PL_runops = RUNOPS_DEFAULT;
1380 else 1689 else
1381 coro->runops = RUNOPS_DEFAULT; 1690 coro->slot->runops = RUNOPS_DEFAULT;
1691 }
1692}
1693
1694/*****************************************************************************/
1695/* PerlIO::cede */
1696
1697typedef struct
1698{
1699 PerlIOBuf base;
1700 NV next, every;
1701} PerlIOCede;
1702
1703static IV
1704PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1705{
1706 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1707
1708 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1709 self->next = nvtime () + self->every;
1710
1711 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1712}
1713
1714static SV *
1715PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1716{
1717 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1718
1719 return newSVnv (self->every);
1720}
1721
1722static IV
1723PerlIOCede_flush (pTHX_ PerlIO *f)
1724{
1725 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1726 double now = nvtime ();
1727
1728 if (now >= self->next)
1729 {
1730 api_cede (aTHX);
1731 self->next = now + self->every;
1732 }
1733
1734 return PerlIOBuf_flush (aTHX_ f);
1735}
1736
1737static PerlIO_funcs PerlIO_cede =
1738{
1739 sizeof(PerlIO_funcs),
1740 "cede",
1741 sizeof(PerlIOCede),
1742 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1743 PerlIOCede_pushed,
1744 PerlIOBuf_popped,
1745 PerlIOBuf_open,
1746 PerlIOBase_binmode,
1747 PerlIOCede_getarg,
1748 PerlIOBase_fileno,
1749 PerlIOBuf_dup,
1750 PerlIOBuf_read,
1751 PerlIOBuf_unread,
1752 PerlIOBuf_write,
1753 PerlIOBuf_seek,
1754 PerlIOBuf_tell,
1755 PerlIOBuf_close,
1756 PerlIOCede_flush,
1757 PerlIOBuf_fill,
1758 PerlIOBase_eof,
1759 PerlIOBase_error,
1760 PerlIOBase_clearerr,
1761 PerlIOBase_setlinebuf,
1762 PerlIOBuf_get_base,
1763 PerlIOBuf_bufsiz,
1764 PerlIOBuf_get_ptr,
1765 PerlIOBuf_get_cnt,
1766 PerlIOBuf_set_ptrcnt,
1767};
1768
1769/*****************************************************************************/
1770
1771static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1772static const CV *slf_cv;
1773static SV *slf_arg0;
1774static SV *slf_arg1;
1775static SV *slf_arg2;
1776static I32 slf_ax; /* top of stack, for restore */
1777
1778/* this restores the stack in the case we patched the entersub, to */
1779/* recreate the stack frame as perl will on following calls */
1780/* since entersub cleared the stack */
1781static OP *
1782pp_restore (pTHX)
1783{
1784 SV **SP = PL_stack_base + slf_ax;
1785
1786 PUSHMARK (SP);
1787
1788 EXTEND (SP, 3);
1789 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1790 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1791 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1792 PUSHs ((SV *)CvGV (slf_cv));
1793
1794 RETURNOP (slf_restore.op_first);
1795}
1796
1797static void
1798slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1799{
1800 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1801}
1802
1803static void
1804slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1805{
1806 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1807
1808 frame->prepare = slf_prepare_set_stacklevel;
1809 frame->check = slf_check_nop;
1810 frame->data = (void *)SvIV (arg [0]);
1811}
1812
1813static void
1814slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1815{
1816 SV **arg = (SV **)slf_frame.data;
1817
1818 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1819
1820 /* if the destination has ->throw set, then copy it */
1821 /* into the current coro's throw slot, so it will be raised */
1822 /* after the schedule */
1823 if (expect_false (ta->next->throw))
1824 {
1825 struct coro *coro = SvSTATE_current;
1826 SvREFCNT_dec (coro->throw);
1827 coro->throw = ta->next->throw;
1828 ta->next->throw = 0;
1829 }
1830}
1831
1832static void
1833slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1834{
1835 if (items != 2)
1836 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1837
1838 frame->prepare = slf_prepare_transfer;
1839 frame->check = slf_check_nop;
1840 frame->data = (void *)arg; /* let's hope it will stay valid */
1841}
1842
1843static void
1844slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1845{
1846 frame->prepare = prepare_schedule;
1847 frame->check = slf_check_nop;
1848}
1849
1850static void
1851slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 frame->prepare = prepare_cede;
1854 frame->check = slf_check_nop;
1855}
1856
1857static void
1858slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859{
1860 frame->prepare = prepare_cede_notself;
1861 frame->check = slf_check_nop;
1862}
1863
1864/* we hijack an hopefully unused CV flag for our purposes */
1865#define CVf_SLF 0x4000
1866
1867/*
1868 * these not obviously related functions are all rolled into one
1869 * function to increase chances that they all will call transfer with the same
1870 * stack offset
1871 * SLF stands for "schedule-like-function".
1872 */
1873static OP *
1874pp_slf (pTHX)
1875{
1876 I32 checkmark; /* mark SP to see how many elements check has pushed */
1877
1878 /* set up the slf frame, unless it has already been set-up */
1879 /* the latter happens when a new coro has been started */
1880 /* or when a new cctx was attached to an existing coroutine */
1881 if (expect_true (!slf_frame.prepare))
1882 {
1883 /* first iteration */
1884 dSP;
1885 SV **arg = PL_stack_base + TOPMARK + 1;
1886 int items = SP - arg; /* args without function object */
1887 SV *gv = *sp;
1888
1889 /* do a quick consistency check on the "function" object, and if it isn't */
1890 /* for us, divert to the real entersub */
1891 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1892 return PL_ppaddr[OP_ENTERSUB](aTHX);
1893
1894 if (!(PL_op->op_flags & OPf_STACKED))
1895 {
1896 /* ampersand-form of call, use @_ instead of stack */
1897 AV *av = GvAV (PL_defgv);
1898 arg = AvARRAY (av);
1899 items = AvFILLp (av) + 1;
1900 }
1901
1902 /* now call the init function, which needs to set up slf_frame */
1903 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1904 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1905
1906 /* pop args */
1907 SP = PL_stack_base + POPMARK;
1908
1909 PUTBACK;
1910 }
1911
1912 /* now that we have a slf_frame, interpret it! */
1913 /* we use a callback system not to make the code needlessly */
1914 /* complicated, but so we can run multiple perl coros from one cctx */
1915
1916 do
1917 {
1918 struct coro_transfer_args ta;
1919
1920 slf_frame.prepare (aTHX_ &ta);
1921 TRANSFER (ta, 0);
1922
1923 checkmark = PL_stack_sp - PL_stack_base;
1924 }
1925 while (slf_frame.check (aTHX_ &slf_frame));
1926
1927 {
1928 dSP;
1929 SV **bot = PL_stack_base + checkmark;
1930 int gimme = GIMME_V;
1931
1932 slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1933
1934 /* make sure we put something on the stack in scalar context */
1935 if (gimme == G_SCALAR)
1936 {
1937 if (sp == bot)
1938 XPUSHs (&PL_sv_undef);
1939
1940 SP = bot + 1;
1382 } 1941 }
1942
1943 PUTBACK;
1944 }
1945
1946 {
1947 struct coro *coro = SvSTATE_current;
1948
1949 if (expect_false (coro->throw))
1950 {
1951 SV *exception = sv_2mortal (coro->throw);
1952
1953 coro->throw = 0;
1954 sv_setsv (ERRSV, exception);
1955 croak (0);
1956 }
1957 }
1958
1959 return NORMAL;
1383} 1960}
1961
1962static void
1963api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1964{
1965 SV **arg = PL_stack_base + ax;
1966 int items = PL_stack_sp - arg + 1;
1967
1968 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1969
1970 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1971 && PL_op->op_ppaddr != pp_slf)
1972 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1973
1974#if 0
1975 if (items > 3)
1976 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1977#endif
1978
1979 CvFLAGS (cv) |= CVf_SLF;
1980 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1981 slf_cv = cv;
1982
1983 /* we patch the op, and then re-run the whole call */
1984 /* we have to put the same argument on the stack for this to work */
1985 /* and this will be done by pp_restore */
1986 slf_restore.op_next = (OP *)&slf_restore;
1987 slf_restore.op_type = OP_CUSTOM;
1988 slf_restore.op_ppaddr = pp_restore;
1989 slf_restore.op_first = PL_op;
1990
1991 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1992 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1993 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1994 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1995
1996 PL_op->op_ppaddr = pp_slf;
1997 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
1998
1999 PL_op = (OP *)&slf_restore;
2000}
2001
2002/*****************************************************************************/
2003
2004static void
2005coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2006{
2007 SV *count_sv = AvARRAY (av)[0];
2008 IV count = SvIVX (count_sv);
2009
2010 count += adjust;
2011 SvIVX (count_sv) = count;
2012
2013 /* now wake up as many waiters as are expected to lock */
2014 while (count > 0 && AvFILLp (av) > 0)
2015 {
2016 SV *cb;
2017
2018 /* swap first two elements so we can shift a waiter */
2019 AvARRAY (av)[0] = AvARRAY (av)[1];
2020 AvARRAY (av)[1] = count_sv;
2021 cb = av_shift (av);
2022
2023 if (SvOBJECT (cb))
2024 api_ready (aTHX_ cb);
2025 else
2026 croak ("callbacks not yet supported");
2027
2028 SvREFCNT_dec (cb);
2029
2030 --count;
2031 }
2032}
2033
2034static void
2035coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2036{
2037 /* call $sem->adjust (0) to possibly wake up some other waiters */
2038 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2039}
2040
2041static int
2042slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2043{
2044 AV *av = (AV *)frame->data;
2045 SV *count_sv = AvARRAY (av)[0];
2046
2047 if (SvIVX (count_sv) > 0)
2048 {
2049 SvSTATE_current->on_destroy = 0;
2050 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2051 return 0;
2052 }
2053 else
2054 {
2055 int i;
2056 /* if we were woken up but can't down, we look through the whole */
2057 /* waiters list and only add us if we aren't in there already */
2058 /* this avoids some degenerate memory usage cases */
2059
2060 for (i = 1; i <= AvFILLp (av); ++i)
2061 if (AvARRAY (av)[i] == SvRV (coro_current))
2062 return 1;
2063
2064 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2065 return 1;
2066 }
2067}
2068
2069static void
2070slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2071{
2072 AV *av = (AV *)SvRV (arg [0]);
2073
2074 if (SvIVX (AvARRAY (av)[0]) > 0)
2075 {
2076 frame->data = (void *)av;
2077 frame->prepare = prepare_nop;
2078 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2079 }
2080 else
2081 {
2082 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2083
2084 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2085 frame->prepare = prepare_schedule;
2086
2087 /* to avoid race conditions when a woken-up coro gets terminated */
2088 /* we arrange for a temporary on_destroy that calls adjust (0) */
2089 assert (!SvSTATE_current->on_destroy);//D
2090 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2091 }
2092
2093 frame->check = slf_check_semaphore_down;
2094
2095}
2096
2097/*****************************************************************************/
2098
2099#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2100
2101/* create a closure from XS, returns a code reference */
2102/* the arg can be accessed via GENSUB_ARG from the callback */
2103/* the callback must use dXSARGS/XSRETURN */
2104static SV *
2105gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2106{
2107 CV *cv = (CV *)NEWSV (0, 0);
2108
2109 sv_upgrade ((SV *)cv, SVt_PVCV);
2110
2111 CvANON_on (cv);
2112 CvISXSUB_on (cv);
2113 CvXSUB (cv) = xsub;
2114 GENSUB_ARG = arg;
2115
2116 return newRV_noinc ((SV *)cv);
2117}
2118
2119/*****************************************************************************/
1384 2120
1385MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2121MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1386 2122
1387PROTOTYPES: DISABLE 2123PROTOTYPES: DISABLE
1388 2124
1389BOOT: 2125BOOT:
1390{ 2126{
1391#ifdef USE_ITHREADS 2127#ifdef USE_ITHREADS
1392 MUTEX_INIT (&coro_mutex); 2128# if CORO_PTHREAD
2129 coro_thx = PERL_GET_CONTEXT;
2130# endif
1393#endif 2131#endif
1394 BOOT_PAGESIZE; 2132 BOOT_PAGESIZE;
2133
2134 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2135 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2136
2137 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2138 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2139 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2140
2141 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2142 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2143 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1395 2144
1396 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2145 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1397 2146
1398 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 2147 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1399 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 2148 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1400 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE)); 2149 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1401 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL)); 2150 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1402 2151
1403 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1404 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1405 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1406 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1407 newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1408 newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
1409 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1410
1411 main_mainstack = PL_mainstack; 2152 main_mainstack = PL_mainstack;
1412 main_top_env = PL_top_env; 2153 main_top_env = PL_top_env;
1413 2154
1414 while (main_top_env->je_prev) 2155 while (main_top_env->je_prev)
1415 main_top_env = main_top_env->je_prev; 2156 main_top_env = main_top_env->je_prev;
1416 2157
2158 {
2159 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2160
2161 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2162 hv_store_ent (PL_custom_op_names, slf,
2163 newSVpv ("coro_slf", 0), 0);
2164
2165 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2166 hv_store_ent (PL_custom_op_descs, slf,
2167 newSVpv ("coro schedule like function", 0), 0);
2168 }
2169
1417 coroapi.ver = CORO_API_VERSION; 2170 coroapi.ver = CORO_API_VERSION;
2171 coroapi.rev = CORO_API_REVISION;
2172
1418 coroapi.transfer = api_transfer; 2173 coroapi.transfer = api_transfer;
2174
2175 coroapi.sv_state = SvSTATE_;
2176 coroapi.execute_slf = api_execute_slf;
2177 coroapi.prepare_nop = prepare_nop;
2178 coroapi.prepare_schedule = prepare_schedule;
2179 coroapi.prepare_cede = prepare_cede;
2180 coroapi.prepare_cede_notself = prepare_cede_notself;
2181
2182 {
2183 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2184
2185 if (!svp) croak ("Time::HiRes is required");
2186 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2187
2188 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2189 }
1419 2190
1420 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2191 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1421} 2192}
1422 2193
1423SV * 2194SV *
1424new (char *klass, ...) 2195new (char *klass, ...)
1425 CODE: 2196 CODE:
1426{ 2197{
1427 struct coro *coro; 2198 struct coro *coro;
2199 MAGIC *mg;
1428 HV *hv; 2200 HV *hv;
1429 int i; 2201 int i;
1430 2202
1431 Newz (0, coro, 1, struct coro); 2203 Newz (0, coro, 1, struct coro);
1432 coro->args = newAV (); 2204 coro->args = newAV ();
1433 coro->save = CORO_SAVE_DEF;
1434 coro->flags = CF_NEW; 2205 coro->flags = CF_NEW;
1435 2206
1436 if (coro_first) coro_first->prev = coro; 2207 if (coro_first) coro_first->prev = coro;
1437 coro->next = coro_first; 2208 coro->next = coro_first;
1438 coro_first = coro; 2209 coro_first = coro;
1439 2210
1440 coro->hv = hv = newHV (); 2211 coro->hv = hv = newHV ();
1441 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 2212 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2213 mg->mg_flags |= MGf_DUP;
1442 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2214 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1443 2215
2216 av_extend (coro->args, items - 1);
1444 for (i = 1; i < items; i++) 2217 for (i = 1; i < items; i++)
1445 av_push (coro->args, newSVsv (ST (i))); 2218 av_push (coro->args, newSVsv (ST (i)));
1446} 2219}
1447 OUTPUT: 2220 OUTPUT:
1448 RETVAL 2221 RETVAL
1449 2222
1450int
1451save (SV *coro, int new_save = -1)
1452 CODE:
1453 RETVAL = api_save (coro, new_save);
1454 OUTPUT:
1455 RETVAL
1456
1457int
1458save_also (SV *coro_sv, int save_also)
1459 CODE:
1460{
1461 struct coro *coro = SvSTATE (coro_sv);
1462 RETVAL = coro->save;
1463 coro->save |= save_also;
1464}
1465 OUTPUT:
1466 RETVAL
1467
1468void 2223void
1469_set_stacklevel (...) 2224_set_stacklevel (...)
1470 ALIAS: 2225 CODE:
1471 Coro::State::transfer = 1 2226 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
1472 Coro::schedule = 2
1473 Coro::cede = 3
1474 Coro::cede_notself = 4
1475 CODE:
1476{
1477 struct transfer_args ta;
1478 2227
1479 switch (ix) 2228void
1480 { 2229transfer (...)
1481 case 0: 2230 PROTOTYPE: $$
1482 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 2231 CODE:
1483 ta.next = 0; 2232 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1484 break;
1485
1486 case 1:
1487 if (items != 2)
1488 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1489
1490 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1491 break;
1492
1493 case 2:
1494 prepare_schedule (aTHX_ &ta);
1495 break;
1496
1497 case 3:
1498 prepare_cede (aTHX_ &ta);
1499 break;
1500
1501 case 4:
1502 if (!prepare_cede_notself (aTHX_ &ta))
1503 XSRETURN_EMPTY;
1504
1505 break;
1506 }
1507
1508 BARRIER;
1509 TRANSFER (ta);
1510
1511 if (GIMME_V != G_VOID && ta.next != ta.prev)
1512 XSRETURN_YES;
1513}
1514 2233
1515bool 2234bool
1516_destroy (SV *coro_sv) 2235_destroy (SV *coro_sv)
1517 CODE: 2236 CODE:
1518 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2237 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1519 OUTPUT: 2238 OUTPUT:
1520 RETVAL 2239 RETVAL
1521 2240
1522void 2241void
1523_exit (code) 2242_exit (int code)
1524 int code
1525 PROTOTYPE: $ 2243 PROTOTYPE: $
1526 CODE: 2244 CODE:
1527 _exit (code); 2245 _exit (code);
1528 2246
1529int 2247int
1530cctx_stacksize (int new_stacksize = 0) 2248cctx_stacksize (int new_stacksize = 0)
2249 PROTOTYPE: ;$
1531 CODE: 2250 CODE:
1532 RETVAL = coro_stacksize; 2251 RETVAL = cctx_stacksize;
1533 if (new_stacksize) 2252 if (new_stacksize)
2253 {
1534 coro_stacksize = new_stacksize; 2254 cctx_stacksize = new_stacksize;
2255 ++cctx_gen;
2256 }
1535 OUTPUT: 2257 OUTPUT:
1536 RETVAL 2258 RETVAL
1537 2259
1538int 2260int
2261cctx_max_idle (int max_idle = 0)
2262 PROTOTYPE: ;$
2263 CODE:
2264 RETVAL = cctx_max_idle;
2265 if (max_idle > 1)
2266 cctx_max_idle = max_idle;
2267 OUTPUT:
2268 RETVAL
2269
2270int
1539cctx_count () 2271cctx_count ()
2272 PROTOTYPE:
1540 CODE: 2273 CODE:
1541 RETVAL = cctx_count; 2274 RETVAL = cctx_count;
1542 OUTPUT: 2275 OUTPUT:
1543 RETVAL 2276 RETVAL
1544 2277
1545int 2278int
1546cctx_idle () 2279cctx_idle ()
2280 PROTOTYPE:
1547 CODE: 2281 CODE:
1548 RETVAL = cctx_idle; 2282 RETVAL = cctx_idle;
1549 OUTPUT: 2283 OUTPUT:
1550 RETVAL 2284 RETVAL
1551 2285
1552void 2286void
1553list () 2287list ()
2288 PROTOTYPE:
1554 PPCODE: 2289 PPCODE:
1555{ 2290{
1556 struct coro *coro; 2291 struct coro *coro;
1557 for (coro = coro_first; coro; coro = coro->next) 2292 for (coro = coro_first; coro; coro = coro->next)
1558 if (coro->hv) 2293 if (coro->hv)
… …
1563call (Coro::State coro, SV *coderef) 2298call (Coro::State coro, SV *coderef)
1564 ALIAS: 2299 ALIAS:
1565 eval = 1 2300 eval = 1
1566 CODE: 2301 CODE:
1567{ 2302{
1568 if (coro->mainstack) 2303 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1569 { 2304 {
1570 struct coro temp; 2305 struct coro temp;
1571 Zero (&temp, 1, struct coro);
1572 temp.save = CORO_SAVE_ALL;
1573 2306
1574 if (!(coro->flags & CF_RUNNING)) 2307 if (!(coro->flags & CF_RUNNING))
1575 { 2308 {
2309 PUTBACK;
1576 save_perl (aTHX_ &temp); 2310 save_perl (aTHX_ &temp);
1577 load_perl (aTHX_ coro); 2311 load_perl (aTHX_ coro);
1578 } 2312 }
1579 2313
1580 { 2314 {
1581 dSP; 2315 dSP;
1582 ENTER; 2316 ENTER;
1583 SAVETMPS; 2317 SAVETMPS;
2318 PUTBACK;
2319 PUSHSTACK;
1584 PUSHMARK (SP); 2320 PUSHMARK (SP);
1585 PUTBACK; 2321
1586 if (ix) 2322 if (ix)
1587 eval_sv (coderef, 0); 2323 eval_sv (coderef, 0);
1588 else 2324 else
1589 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 2325 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2326
2327 POPSTACK;
1590 SPAGAIN; 2328 SPAGAIN;
1591 FREETMPS; 2329 FREETMPS;
1592 LEAVE; 2330 LEAVE;
1593 PUTBACK; 2331 PUTBACK;
1594 } 2332 }
1595 2333
1596 if (!(coro->flags & CF_RUNNING)) 2334 if (!(coro->flags & CF_RUNNING))
1597 { 2335 {
1598 save_perl (aTHX_ coro); 2336 save_perl (aTHX_ coro);
1599 load_perl (aTHX_ &temp); 2337 load_perl (aTHX_ &temp);
2338 SPAGAIN;
1600 } 2339 }
1601 } 2340 }
1602} 2341}
1603 2342
1604SV * 2343SV *
… …
1613 RETVAL = boolSV (coro->flags & ix); 2352 RETVAL = boolSV (coro->flags & ix);
1614 OUTPUT: 2353 OUTPUT:
1615 RETVAL 2354 RETVAL
1616 2355
1617void 2356void
2357throw (Coro::State self, SV *throw = &PL_sv_undef)
2358 PROTOTYPE: $;$
2359 CODE:
2360 SvREFCNT_dec (self->throw);
2361 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2362
2363void
1618api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2364api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2365 PROTOTYPE: $;$
2366 C_ARGS: aTHX_ coro, flags
1619 2367
1620SV * 2368SV *
1621has_stack (Coro::State coro) 2369has_cctx (Coro::State coro)
1622 PROTOTYPE: $ 2370 PROTOTYPE: $
1623 CODE: 2371 CODE:
1624 RETVAL = boolSV (!!coro->cctx); 2372 RETVAL = boolSV (!!coro->cctx);
1625 OUTPUT: 2373 OUTPUT:
1626 RETVAL 2374 RETVAL
… …
1631 CODE: 2379 CODE:
1632 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2380 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1633 OUTPUT: 2381 OUTPUT:
1634 RETVAL 2382 RETVAL
1635 2383
1636IV 2384UV
1637rss (Coro::State coro) 2385rss (Coro::State coro)
1638 PROTOTYPE: $ 2386 PROTOTYPE: $
1639 ALIAS: 2387 ALIAS:
1640 usecount = 1 2388 usecount = 1
1641 CODE: 2389 CODE:
… …
1645 case 1: RETVAL = coro->usecount; break; 2393 case 1: RETVAL = coro->usecount; break;
1646 } 2394 }
1647 OUTPUT: 2395 OUTPUT:
1648 RETVAL 2396 RETVAL
1649 2397
2398void
2399force_cctx ()
2400 PROTOTYPE:
2401 CODE:
2402 SvSTATE_current->cctx->idle_sp = 0;
2403
2404void
2405swap_defsv (Coro::State self)
2406 PROTOTYPE: $
2407 ALIAS:
2408 swap_defav = 1
2409 CODE:
2410 if (!self->slot)
2411 croak ("cannot swap state with coroutine that has no saved state,");
2412 else
2413 {
2414 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2415 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2416
2417 SV *tmp = *src; *src = *dst; *dst = tmp;
2418 }
1650 2419
1651MODULE = Coro::State PACKAGE = Coro 2420MODULE = Coro::State PACKAGE = Coro
1652 2421
1653BOOT: 2422BOOT:
1654{ 2423{
1655 int i; 2424 int i;
1656 2425
1657 sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
1658 sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
1659 av_async_pool = get_av ("Coro::async_pool", TRUE); 2426 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2427 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2428 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1660 2429
1661 coro_current = get_sv ("Coro::current", FALSE); 2430 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1662 SvREADONLY_on (coro_current); 2431 SvREADONLY_on (coro_current);
1663 2432
1664 coro_stash = gv_stashpv ("Coro", TRUE); 2433 coro_stash = gv_stashpv ("Coro", TRUE);
1665 2434
1666 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2435 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1667 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2436 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1668 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 2437 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1669 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 2438 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
… …
1672 2441
1673 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2442 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1674 coro_ready[i] = newAV (); 2443 coro_ready[i] = newAV ();
1675 2444
1676 { 2445 {
1677 SV *sv = perl_get_sv("Coro::API", 1); 2446 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1678 2447
1679 coroapi.schedule = api_schedule; 2448 coroapi.schedule = api_schedule;
1680 coroapi.save = api_save;
1681 coroapi.cede = api_cede; 2449 coroapi.cede = api_cede;
1682 coroapi.cede_notself = api_cede_notself; 2450 coroapi.cede_notself = api_cede_notself;
1683 coroapi.ready = api_ready; 2451 coroapi.ready = api_ready;
1684 coroapi.is_ready = api_is_ready; 2452 coroapi.is_ready = api_is_ready;
1685 coroapi.nready = &coro_nready; 2453 coroapi.nready = coro_nready;
1686 coroapi.current = coro_current; 2454 coroapi.current = coro_current;
1687 2455
1688 GCoroAPI = &coroapi; 2456 GCoroAPI = &coroapi;
1689 sv_setiv (sv, (IV)&coroapi); 2457 sv_setiv (sv, (IV)&coroapi);
1690 SvREADONLY_on (sv); 2458 SvREADONLY_on (sv);
1691 } 2459 }
1692} 2460}
2461
2462void
2463schedule (...)
2464 CODE:
2465 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2466
2467void
2468cede (...)
2469 CODE:
2470 CORO_EXECUTE_SLF_XS (slf_init_cede);
2471
2472void
2473cede_notself (...)
2474 CODE:
2475 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
1693 2476
1694void 2477void
1695_set_current (SV *current) 2478_set_current (SV *current)
1696 PROTOTYPE: $ 2479 PROTOTYPE: $
1697 CODE: 2480 CODE:
1698 SvREFCNT_dec (SvRV (coro_current)); 2481 SvREFCNT_dec (SvRV (coro_current));
1699 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2482 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2483
2484void
2485_set_readyhook (SV *hook)
2486 PROTOTYPE: $
2487 CODE:
2488 SvREFCNT_dec (coro_readyhook);
2489 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1700 2490
1701int 2491int
1702prio (Coro::State coro, int newprio = 0) 2492prio (Coro::State coro, int newprio = 0)
2493 PROTOTYPE: $;$
1703 ALIAS: 2494 ALIAS:
1704 nice = 1 2495 nice = 1
1705 CODE: 2496 CODE:
1706{ 2497{
1707 RETVAL = coro->prio; 2498 RETVAL = coro->prio;
… …
1722 2513
1723SV * 2514SV *
1724ready (SV *self) 2515ready (SV *self)
1725 PROTOTYPE: $ 2516 PROTOTYPE: $
1726 CODE: 2517 CODE:
1727 RETVAL = boolSV (api_ready (self)); 2518 RETVAL = boolSV (api_ready (aTHX_ self));
1728 OUTPUT: 2519 OUTPUT:
1729 RETVAL 2520 RETVAL
1730 2521
1731int 2522int
1732nready (...) 2523nready (...)
… …
1739# for async_pool speedup 2530# for async_pool speedup
1740void 2531void
1741_pool_1 (SV *cb) 2532_pool_1 (SV *cb)
1742 CODE: 2533 CODE:
1743{ 2534{
1744 int i, len;
1745 HV *hv = (HV *)SvRV (coro_current); 2535 HV *hv = (HV *)SvRV (coro_current);
2536 struct coro *coro = SvSTATE_hv ((SV *)hv);
1746 AV *defav = GvAV (PL_defgv); 2537 AV *defav = GvAV (PL_defgv);
1747 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2538 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1748 AV *invoke_av; 2539 AV *invoke_av;
2540 int i, len;
1749 2541
1750 if (!invoke) 2542 if (!invoke)
2543 {
2544 SV *old = PL_diehook;
2545 PL_diehook = 0;
2546 SvREFCNT_dec (old);
1751 croak ("\3terminate\2\n"); 2547 croak ("\3async_pool terminate\2\n");
2548 }
2549
2550 SvREFCNT_dec (coro->saved_deffh);
2551 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1752 2552
1753 hv_store (hv, "desc", sizeof ("desc") - 1, 2553 hv_store (hv, "desc", sizeof ("desc") - 1,
1754 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); 2554 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1755 2555
1756 invoke_av = (AV *)SvRV (invoke); 2556 invoke_av = (AV *)SvRV (invoke);
… …
1760 2560
1761 if (len > 0) 2561 if (len > 0)
1762 { 2562 {
1763 av_fill (defav, len - 1); 2563 av_fill (defav, len - 1);
1764 for (i = 0; i < len; ++i) 2564 for (i = 0; i < len; ++i)
1765 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 2565 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1766 } 2566 }
1767
1768 SvREFCNT_dec (invoke);
1769} 2567}
1770 2568
1771void 2569void
1772_pool_2 (SV *cb) 2570_pool_2 (SV *cb)
1773 CODE: 2571 CODE:
1774{ 2572{
1775 struct coro *coro = SvSTATE (coro_current); 2573 struct coro *coro = SvSTATE_current;
1776 2574
1777 sv_setsv (cb, &PL_sv_undef); 2575 sv_setsv (cb, &PL_sv_undef);
1778 2576
2577 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2578 coro->saved_deffh = 0;
2579
1779 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) 2580 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1780 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2581 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2582 {
2583 SV *old = PL_diehook;
2584 PL_diehook = 0;
2585 SvREFCNT_dec (old);
1781 croak ("\3terminate\2\n"); 2586 croak ("\3async_pool terminate\2\n");
2587 }
1782 2588
1783 av_clear (GvAV (PL_defgv)); 2589 av_clear (GvAV (PL_defgv));
1784 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 2590 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1785 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 2591 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1786 coro->save = CORO_SAVE_DEF; 2592
1787 coro->prio = 0; 2593 coro->prio = 0;
1788 2594
1789 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2595 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1790 api_trace (coro_current, 0); 2596 api_trace (aTHX_ coro_current, 0);
1791 2597
1792 av_push (av_async_pool, newSVsv (coro_current)); 2598 av_push (av_async_pool, newSVsv (coro_current));
1793} 2599}
1794 2600
1795 2601
1796MODULE = Coro::State PACKAGE = Coro::AIO 2602MODULE = Coro::State PACKAGE = Coro::AIO
1797 2603
1798SV * 2604void
1799_get_state () 2605_get_state (SV *self)
2606 PROTOTYPE: $
1800 CODE: 2607 PPCODE:
1801{ 2608{
1802 struct io_state *data; 2609 AV *defav = GvAV (PL_defgv);
1803 2610 AV *av = newAV ();
2611 int i;
1804 RETVAL = newSV (sizeof (struct io_state)); 2612 SV *data_sv = newSV (sizeof (struct io_state));
1805 data = (struct io_state *)SvPVX (RETVAL); 2613 struct io_state *data = (struct io_state *)SvPVX (data_sv);
1806 SvCUR_set (RETVAL, sizeof (struct io_state)); 2614 SvCUR_set (data_sv, sizeof (struct io_state));
1807 SvPOK_only (RETVAL); 2615 SvPOK_only (data_sv);
1808 2616
1809 data->errorno = errno; 2617 data->errorno = errno;
1810 data->laststype = PL_laststype; 2618 data->laststype = PL_laststype;
1811 data->laststatval = PL_laststatval; 2619 data->laststatval = PL_laststatval;
1812 data->statcache = PL_statcache; 2620 data->statcache = PL_statcache;
2621
2622 av_extend (av, AvFILLp (defav) + 1 + 1);
2623
2624 for (i = 0; i <= AvFILLp (defav); ++i)
2625 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2626
2627 av_push (av, data_sv);
2628
2629 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2630
2631 api_ready (aTHX_ self);
1813} 2632}
1814 OUTPUT:
1815 RETVAL
1816 2633
1817void 2634void
1818_set_state (char *data_) 2635_set_state (SV *state)
1819 PROTOTYPE: $ 2636 PROTOTYPE: $
1820 CODE: 2637 PPCODE:
1821{ 2638{
1822 struct io_state *data = (void *)data_; 2639 AV *av = (AV *)SvRV (state);
2640 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2641 int i;
1823 2642
1824 errno = data->errorno; 2643 errno = data->errorno;
1825 PL_laststype = data->laststype; 2644 PL_laststype = data->laststype;
1826 PL_laststatval = data->laststatval; 2645 PL_laststatval = data->laststatval;
1827 PL_statcache = data->statcache; 2646 PL_statcache = data->statcache;
1828}
1829 2647
2648 EXTEND (SP, AvFILLp (av));
2649 for (i = 0; i < AvFILLp (av); ++i)
2650 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2651}
2652
2653
2654MODULE = Coro::State PACKAGE = Coro::AnyEvent
2655
2656BOOT:
2657 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2658
2659void
2660_schedule (...)
2661 CODE:
2662{
2663 static int incede;
2664
2665 api_cede_notself (aTHX);
2666
2667 ++incede;
2668 while (coro_nready >= incede && api_cede (aTHX))
2669 ;
2670
2671 sv_setsv (sv_activity, &PL_sv_undef);
2672 if (coro_nready >= incede)
2673 {
2674 PUSHMARK (SP);
2675 PUTBACK;
2676 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2677 SPAGAIN;
2678 }
2679
2680 --incede;
2681}
2682
2683
2684MODULE = Coro::State PACKAGE = PerlIO::cede
2685
2686BOOT:
2687 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2688
2689MODULE = Coro::State PACKAGE = Coro::Semaphore
2690
2691SV *
2692new (SV *klass, SV *count_ = 0)
2693 CODE:
2694{
2695 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2696 AV *av = newAV ();
2697 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));
2698 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
2699}
2700 OUTPUT:
2701 RETVAL
2702
2703SV *
2704count (SV *self)
2705 CODE:
2706 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2707 OUTPUT:
2708 RETVAL
2709
2710void
2711up (SV *self, int adjust = 1)
2712 ALIAS:
2713 adjust = 1
2714 CODE:
2715 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2716
2717void
2718down (SV *self)
2719 CODE:
2720 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
2721
2722void
2723try (SV *self)
2724 PPCODE:
2725{
2726 AV *av = (AV *)SvRV (self);
2727 SV *count_sv = AvARRAY (av)[0];
2728 IV count = SvIVX (count_sv);
2729
2730 if (count > 0)
2731 {
2732 --count;
2733 SvIVX (count_sv) = count;
2734 XSRETURN_YES;
2735 }
2736 else
2737 XSRETURN_NO;
2738}
2739
2740void
2741waiters (SV *self)
2742 CODE:
2743{
2744 AV *av = (AV *)SvRV (self);
2745
2746 if (GIMME_V == G_SCALAR)
2747 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
2748 else
2749 {
2750 int i;
2751 EXTEND (SP, AvFILLp (av) + 1 - 1);
2752 for (i = 1; i <= AvFILLp (av); ++i)
2753 PUSHs (newSVsv (AvARRAY (av)[i]));
2754 }
2755}
2756

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